Vulcanizing apparatus



2Sheet-Sheet1 J. HOOD 8v S. H. REYNOLDS.

VULGANIZINGIAPPARATUS.

Patented O0t.29,1895.

(No Modelf) f1/autom".

(No Model.)

2 Sheets-Sheet 2.

J. oon & s. H. REYNOLDS. VULGANIZING APPARATUS.

Patented 0013.29, 1895.

Unire# TAT-ns ATENT OFFICE.

JOHN HOOD AND STEPHEN H. REYNOLDS, OF BOSTON, MASSACHUSETTS.

AVU LCANIZING APPARATUS.

SPEGIFLCATION forming part of Letters Patent No. 548,990, dated October 29, 1895.

which it appertains to make and use the same, l

reference being had to the accompanying drawings.

This invention relates to improvements in vulcanizing apparatus of that class which'is especially adapted to the use of dentists.

It has for its obj ect the provision of a mechanism whereby the cover can be quickly secured in place on the receptacle, and whichv mechanism will at the same time have sufficient strength to resist any force that may be exerted by the pressure of the steam on the cover to displace the same. v

The invention consists in the novel construction, combination, and arrangement of parts, such as will be hereinafter fullydescribed, pointed out in the appended claims, and illustrated in the accompanying drawings.

In the accompanying drawings', in which similar letters of reference designate corresponding parts, Figure lis a perspective view of a vulcanizer embodying the invention. Fig. 2 is a side elevation of the same, the lower portion of the receptacle being broken away and the cover detached and elevated above the receptacle. Fig. 3 is a verticalsectional view of the same. Fig. 4. is a detail perspective view showing the rider. Fig. 5 is a detail view showing a portion of the under side of the cover. Fig. 6 is a similar view showing a portion of the upper edge of the receptacle. Fig. 7 is an enlarged detailsectional view showing the steam-escape mechanism. Fig. 8 is a detail view showing the safetydisk and the washer.v Fig. 9 is a side elevation of the levers and the rider, the former being depressed below the horizontal.

Referring to the drawings by letter, Adesignates the receptacle in which the material to be treated is placed. Around the upper end of the receptacle an annular shoulder a is formed. This shoulder in the present instance is made integral with the receptacle.

Application filed June 1, 1895. Serial No. 551,385. (No model.)

It may be made separate, however, and secured to the receptacle in any manner suitable in the premises. On diametrically-opposite sides of the receptacle the lugs a a', bifurcated at their upper ends, project from the annular shoulder. Between the bifurcations of each lug a hook or catch 0,2 is seated and is secured therein by the rivets a3 d3. The ends of these hooks or catches project inwardly. Itis obvious that they may be cast integrally with the receptacle. A suitable handle H is secured to the receptacle by having a screw projecting from its inner end turned into the shoulder a.

' -Upon the cover B in a central position the standard b ismounted and has formed in its lower end the slot b. A vertical screwthreaded aperture extends through the top of the standard to the slot b' and has mounted therein the screw b2. The latter is provided with a hand-wheel b3. On opposite sides of the post and in line with the slot in the lower end of the same the bifu'rcated ears b4 b4 are respectively secured by the screws 65125 to the cover. The levers O O are respectively pivoted between the bifurcations of these ears. The inner ends of the levers project through the slot b side by side. Each is normally held in an elevated position at its inner end by the spring c, interposed between the same and the cover, the spring being secured to the lever by the screw c. Mounted in the slot b and resting on the ends of the levers C O is the rider c2. t The latter is provided with spurs 03.03, which serve to retain the same in itsproper position. On this rider the lower end of the screw b2 impinges.

The rider c2 does not rest directly upon the upper faces of the levers C C, but rests upon lugs projecting from the. upper faces of the levers. These lugs are in the present instance the screw-heads c5 c5. They may be formed integral with .the levers. If the rider rested directly on-the upper faces ofthe levers, itis obvious that the depressionof the inner ends of the Y latter'A would be limited. This limitation would be occasioned bythe upper faces of the' levers and vvthe under face of the `rider coming into substantially the same horizontal plane, so that the pressure of the rider would be distributed along the entire length of the levers where the rider con- ICO tacted with the same, and the pressure that1 would be exerted in consequence would not;`

jecting therefrom a pin a4, which is adapted to register with the socket a5, formed in the` under face of the cover B. The object of this f pin and `socket is -to insure the `proper seating of the cover on the receptacle.

An `annular groove is formed inthe under face of `the cover and has placed therein the soft-metal packing P. When the cover issecuredin place, afsteam-tight 'joint betweenthe l sarneland the receptacle is secured.

When 1t is desired vtosecure the cover fon the receptacle, the screw b2 is turned out of the standard to such an eXtentas to allowthe springs c c to depress the outer ends `:of their 1 The cover Vis then placed The -proper relative posirespective levers. on the receptacle. tions -of the two `are insured `by the :registration of the `pin a4 withthe socket a5.

When so placed, the `outer ends of the levers will ybe iin-f mediately under their respective catchesazlctz.. l The screw b2 is then turned .down and `by'im- .l

pinging on the `rider c2 forces the :inner ends;

of the levers downward, Iand thereby raises their outer-ends `into engagement with 'their` respective catches. .It is to beobserved that the outer ends -of the leversarecut away :atl c4 c4 to provide proper `bearing-surfaces of the same against their respective catches.

E designates a fbnlb having two farms or pipes e and f, Awhich are externally screws threaded. Itlis connected with thereceptacle by having oneof itsarms e screwed through l theshonlder d and thewalloftho receptacle.

Through these arms passages e and f respectively lead. The passagee opens zat its inner end into the receptacle.

In the fouter end of this passage a pin e2 is mounted, which controls the same.

The inner endof thepin is beveled and is adapted to lbeseated on the annular iiange e3, projecting from the inner face of the .passage e.

around the pin the packing e4.

The outer end of the passage is enlarged and :has seated :therein The latter is? held in place and compressedbylthe sleevee,

screwed into the outer end of the passage.`

Through the sleeve the rpin passes, being' screwed therein, the outer rendof :the Apin and the :inner periphery of thesleeve being screwl threaded for `the purpose.

The passage f', leading throughthe arm f,1

connects with the `passageefat'a point intermediate of the flange eand the packing e4..

Ordinarily the upper endof this passage Iis closed by the safety-disk f 2. Thelatter is held in place by the cap f3, mounted on the outer end of the arm f. Between the disk and the cap a washerftis interposed. rlhelatter has a transverse groove f5, formed in its upper face, which is adapted to register with the aperture f, formed `in the side of the cap.

In order to remove a ruptured disk, the cap fais uuscrewed. It often happens that the disk becomes jammed in the cap against thc washer f4. If this shouldhappen,the removal ,l of the disk `is facilitated by forcing a sharppointed instrument through the aperture fin the cap into the groove f5 between the cap and the washer, and the latter thereby displaced, and consequently the disk.

It is to be observed that the washerandthe cap are .provided with=openings .in `alignment with the passage y" toallow a free V.egress of thesteam should thedisk be ruptured.

By turning :the pin e2 out of tthe passage e thelpressufre of theisteamiinthe receptaclecan be regulated or allowed `toescape altogether.

When the pressureof :the steamreachesa cer tain point, 4which has `been :determined to be lthe safety limit, the disk f2 will ibo ruptured and the steam allowed to escape through lthe passage f. The pressure which the disks, .whichrare of 3a :uniform structure, can sustain can be easily determined, and when one is ruptured it .can 4tbe `readily replaced.

A thermometer T is attached to the cover forobvious purposes. It is `:provided with a rotatable :cover or 'jacket t, which .serves to protect fthe same against tinju ry rand extraneous cooling.

Having thus described our invention, what we claim,.anddesire to `secure by Letters Rattent, is p l. In .a vulcanizing apparatus, the combination `of the receptacle, the lcatches gprojecting therefrom, the cover, the slotted standard mounted thereon, the levers pivoted to the .cover,:adapted toengage .withthesaidscatches at their .outer `ends `and having their `inner ends projecting through the Slot :formed in the standard,and.the mechanism for depress ing :the innerendsof thelleversysubstantiall y as rdescrirbed.

.2. In a vulcanizing apparatus, thecombimation ofthe receptacle, thecatches .project-A lingtherefrom,thecover,1theslotted standard :mounted thereon, the levers rpivoted vto the cover, adaptedtoengage `with the said catches at theirouter ends and having their inner ends projecting through lthe slot formed in the standard, the rider `mounted in the said slot and restingron the Sinner `ends `of the levers, and thescrew `mountedfinrthe standard and impinging on'the saidrider, substantially as described.

.3'. In a vulcanizing apparatus, the combi` nationlof `the receptacle, the catchesprojectling therefrom, the cover,- the slotted vstandard :mounted thereon, the levers pivoted to fthe .cover,ladapted to engage with .the said catches ICO lio

at their outer ends and having their inner ends projecting through the slot formed in the standard, thelugs projecting from the upper faces of the inner ends of the levers, the rider mounted in the said slot and resting on the said lugs, and the screw mounted in the standard and impinging on the rider, substantially as described.

4. In a vulcanizing apparatus, the combination of the receptacle, the catches projecting therefrom, the cover, the bifurcated ears mounted thereon, the levers respectively pivoted between the bifurcations of the said ears and having their outer ends adapted to engage with the said catches, and the mechanism for depressing the inner ends of the said levers, substantially as described.

5. In a vulcanizing apparatus, the combination of the receptacle, the catches projecting therefrom, the cover, the bifurcated ears mounted thereon, the levers respectively pivoted between the bifurcations of the said ears, the springs interposed between the inner ends of the levers and the cover, and the and their inner ends projecting through the slot formed in the standard, the rider mounted in the said slot and resting on the inner ends of the levers, and the screw mounted in the standard and impinging on the rider, sub- 4o stantially as described.

In testimony whereof we hereunto affix our signatures in the presence of two Witnesses.

JOHN HOOD. STEPHEN H. REYNOLDS. Witnesses:

GEO. L. RIDLEY, O. H. BURLEIGH. 

